Assessing Hypolimnetic Stress in a Monomictic, Eutrophic Lake Using Profundal Sediment and Macrobenthic Characteristics

Bazzanti, Marcello; Seminara, Marco; Baldoni, Sabrina; Dowgiallo, Maria Giuseppina

doi:10.1080/02705060.1998.9663637

Cited by 10 publications

(6 citation statements)

References 13 publications

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“…Mientras que la reducción de las poblaciones de estos organismos en época de lluvias es causada por el mayor movimiento de la masa de agua debido al efecto de arrastre que provoca este periodo, el cual produce el aumento de la intensidad de las corrientes en el fondo lo cual provoca la inhibición de las comunidades y reduce considerablemente su tasa de crecimiento (Prejs y Prejs, 1992;Iwakuma, 1992;Jackson, 1993;Brug, 2005). Bazzanti et al (1998) y Díaz (2000, indican que una baja riqueza los taxones en estos ecosistemas en el verano es generada por la reducción de oxígeno en toda la columna de agua, mayor actividad de los depredadores, reducción del alimento, cambios en los ciclos de vida y la migración, observando una recolonización en el lago cuando este registra una estabilidad ambiental y un incremento en la concentración del oxígeno disuelto en el agua, sucediendo principalmente estos cambios durante el otoño.…”

Section: Discussionunclassified

Macroinvertebrados bentónicos de dos lagos de alta montaña en el estado de Morelos, México

et al. 2017

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Los ambientes naturales como los lagos Zempoala y Tonatiahua representan un potencial importante en la conservación de especies endémicas, además de participar en los mecanismos de regulación ecológica dentro de los lagos. El objetivo del presente fue reconocer la riqueza de macroinvertebrados bentónicos y de la zona litoral de ambos lagos, así como también actualizar el listado taxonómico de su fauna. Se realizaron cuatro muestreos en ambos lagos durante los periodos de estiaje y lluvias entre los años 2013 y 2015. Para la recolecta se utilizaron redes con poro de 500 µm de forma rectangular y en “D”. El material se preservó en alcohol al 70 % para su posterior análisis en el laboratorio de Invertebrados de la Facultad de Ciencias Biológicas de la UAEM. Para la identificación de los macroinvertebrados se utilizaron claves de identificación y literatura especializada. Los resultados fueron: para el lago Zempoala se reconocieron seis clases taxonómicas, 15 órdenes, 27 familias y 34 géneros; se registra por primera vez al isópodo Asellus sp. para estos lagos. Las familias más abundantes fueron Chironomidae, Hyallelidae, Coenagrionidae y Cambaridae. Para el lago Tonatiahua se reconocieron 16 órdenes, 41 familias y 43 géneros. Las familias más abundantes fueron Hyallelidae, Chironomidae, Cambaridae, Corixidae y el orden Sarcoptiformes.

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Section: Discussionunclassified

Macroinvertebrados bentónicos de dos lagos de alta montaña en el estado de Morelos, México

et al. 2017

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“…Changes over time can be tracked using the changes in community structure (Aagaard 1986) and abundances (Kajak 1997) of the remains of non-biting midges (i.e., Chironomidae and Chaoborus) preserved in lake sediments (Brodersen, and Quinlan 2006). For example, some chironomids use increased levels of hemoglobin (Czeczuga 1960;Weber 1980), migration strategies (Bazzanti et al 1998), or tube ventilation (Brodersen, and Quinlan 2006) to tolerate low [O 2 ], whereas Chaoborus typically use high levels of hemolymph (Scholz, and Zerbst-Boroffka 1998;Jäger, and Walz 2002), and some taxa are able to migrate through the water column (Wissel et al 2003;Sweetman, and Smol 2006). Due to the distributions and abundances of (Brodersen, and Lindegaard 1999;Brooks et al 2001;Quinlan, and Smol 2001a;Luoto, and Salonen 2010).…”

Section: Introductionmentioning

confidence: 99%

Multiple stressor effects on water quality in Poplar Bay, Lake of the Woods, Canada: a midge-based assessment of hypolimnetic oxygen conditions over the last two centuries

et al. 2012

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Chironomid and Chaoborus (midge) remains preserved in a dated sediment core from Poplar Bay, Lake of the Woods (LOW), Ontario, Canada, were used to assess the effects of multiple stressors (e.g., recent warming and shoreline development) on water quality over the past ~200 years. As monitoring data for LOW do not extend beyond recent decades, paleolimnological methods are used to reconstruct long-term limnological trends and to establish pre-disturbance conditions. The effects of recent warming and shoreline development on Poplar Bay water quality are examined using an index of hypolimnetic oxygen (O2) status based on the ratio of Chaoborus to chironomid remains (chaob:chir) and a midge-inferred volume-weighted hypolimnetic oxygen (VWHO) model. Our paleolimnological data indicate that hypolimnetic [O2] in Poplar Bay have been historically hypoxic (1-4 mg O2 L-1) but have declined further (generally <2 mg O2 L-1) over the last few decades. Significant relationships between air temperature and midge data indicate that substantial warming starting in the late-1970s has triggered a marked response in the midge assemblages that pre-dates the onset of cottage development (mid-1990s). These findings complement a diatom-based study on the same sediment core, likewise suggesting that recent warming has played a prominent role in structuring limnetic communities. However, it is likely that the full, compounded effects of recent warming and shoreline development have not yet been realized. Our study highlights the complexity of multiple stressor systems, such as Poplar Bay, and emphasizes the benefits of using multiple, independent lines of paleoenvironmental evidence in gaining a more complete understanding of historical water quality

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“…Hypolimnetic oxygen concentration, which is the main limiting factor for the profundal community, is not always related to the trophic state but can also depend on lake morphometry (Bazzanti & Seminara, 1985). Macrozoobenthos respond to a restricted oxygen content with a decreasing species number, abundance, and biomass (Kajak, 1988;Int Panis et al, 1995;Jónasson, 1996;Bazzanti et al, 1998). Summer oxygen content plays the main role among the factors that control the distribution of chironomid larvae on the bottom; it is more important than the concentration of nutrients (Kansanen et al, 1984).…”

Section: Introductionmentioning

confidence: 99%

“…Artificial oxygenation of the hypolimnion can lead to significant positive changes in hypolimnion benthic communities (Dinsmore & Prepas, 1993, 1997, while the autumn overturn alone cannot affect significantly anoxic deep-water communities (Bazzanti & Seminara, 1985;Bazzanti et al, 1998). Highly mobile taxa unable to tolerate hypoxia respond to a decline of the oxygen concentration by migrating upward in the water column.…”

Section: Introductionmentioning

confidence: 99%

Macro- and meiozoobenthos in some small stratified lakes of Estonia

Timm¹,

Möls²,

Timm³

2010

Estonian J. Ecol.

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Macro-and meiozoobenthos (300 samples with a 225 cm 2 Boruckij grab and 180 with a 6.38 cm 2 corer) from unvegetated, soft-bottom areas in ten small stratified lakes were studied in July-August 1998-1999. The sampling sites were located just above, in the middle, and below the position of the metalimnion in each lake. Chironomidae and Oligochaeta were common in both macro-and meiozoobenthic samples but more abundant (by an order of magnitude) in the latter because the smallest individuals were included. The meiobenthic samples were dominated by planktonic crustaceans, particularly Cyclopoida, with respect to abundance while most of their biomass was formed by the macrobenthic animal groups. Eumeiobenthos sensu stricto, such as Nematoda, Ostracoda, etc., were scarce. Thirty-three variables (abundance, biomass, and number of taxa in different samples) were related to water layer (epi-, meta-, and hypolimnion), sampling depth, lake, year, and O 2 saturation %. Most variables depended on lake but not on year. Abundance and biomass of the studied taxa and the number of taxa of macrozoobenthos per sample decreased significantly from the epi-to hypolimnion, except for Chaoborus flavicans, which was more abundant in deeper layers of water. From the results of ANOVA, it was concluded that the biomass and abundance of Chaoborus, biomass of Hydrachnidia, abundance of Chironomidae and other 'large' animals in the meiobenthic samples, as well as the number of taxa of macrozoobenthos per sample did not follow the layers but only the depth. The distribution of the biomass of macrozoobenthic Chironomidae as well as the total biomass and abundance of macrozoobenthos without Chaoborus were more tied to separate layers. For the majority of individual taxa no dependence on depth was found. Discriminant analysis revealed a rather weak separation of the water layers in summer by the benthic characteristics. An index formed of 33 variables of zoobenthos with the highest statistical significance for testing the depth effect (Depth Index) revealed the most apparent changes in environmental conditions in the upper part of the metalimnion.

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Assessing Hypolimnetic Stress in a Monomictic, Eutrophic Lake Using Profundal Sediment and Macrobenthic Characteristics

Cited by 10 publications

References 13 publications

Macroinvertebrados bentónicos de dos lagos de alta montaña en el estado de Morelos, México

Macroinvertebrados bentónicos de dos lagos de alta montaña en el estado de Morelos, México

Multiple stressor effects on water quality in Poplar Bay, Lake of the Woods, Canada: a midge-based assessment of hypolimnetic oxygen conditions over the last two centuries

Macro- and meiozoobenthos in some small stratified lakes of Estonia

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